Which of the following statements is/are not true? I. In Urochordata, notochord is present only ...

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Which of the following statements is/are not true?
I. In Urochordata, notochord is present only in larval tail.
II. In Cephalochordata, notochord extends from head tail region.
III. Branchiostoma belongs to Hemichordata.
IV. Only one class of living members class-
Cyclostomata represents the superclass-Agnatha.
Choose the correct option.
(A) Only III
(B) I and IV
(C) III and IV
(D) I, II and IV
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